Yesterday we wrote about why experts say gas should be used where it cannot be replaced. Here is a good example from Finland: a wastewater plant that makes its own biogas and uses it for its own heat.

A heating plant on a trailer

The Finnish plumbing and heating company Orimattilan Putkityö reports that the wastewater treatment plant in the Jyväskylä region is being supplied with a trailer-mounted heating plant that burns biogas. Inside are two Viessmann boilers, each with its own Oilon burner, delivering 2 x 900 kW.

The photos from the build show the two boilers side by side, with yellow gas pipes to the burners and stainless steel flue pipes above the boilers.

Why biogas at a wastewater plant?

A wastewater plant produces biogas when the sludge is digested. The gas can be used to keep the digesters and buildings warm, so the plant covers part of its own heat demand. That is exactly the kind of place where biogas makes the most sense: the gas is made and used on the same site, without being sent into the grid.

What does a biogas burner require?

Biogas is not the same as natural gas. It contains more CO₂, so its calorific value is lower, and it can contain moisture and sulphur compounds. That is why the burner must be set up and approved for the gas, and the gas train must be able to handle it.

Oilon makes burners for gas, oil and biogas, including the outputs a wastewater plant or a district heating plant needs.

Oilon at Arne Nielsen A/S

Arne Nielsen A/S has been an official Oilon distributor for almost 50 years. We supply Oilon burners and spare parts for gas, oil, biogas and HVO. If you have a plant that needs to switch to biogas, or a burner that needs replacing, write to us at info@arnenielsen.com with the boiler output and the fuel. See also our Oilon page.

Source: Orimattilan Putkityö Oy on LinkedIn, October 2026